I've always wondered if Lotteries using the "white, numbered lightweight balls, possibly could be rigged. I have heard they keep them under lock and key?? but they are also weighed. Now, if the lottery ball was, during its' manufacture, had placed within its' inside, a tiny "filing" of iron, then not only would that "iron filing" not contribute significantly to the weight requirements of the ball, but it would cause the ball to be "captured by an electromagnet", say placed at the right position in the "lottery drawing ball machine, thereby causing that ball to be "captured" momentarily and roll out the "chute" as one of the drawn numbers. Just wondering, seems as though it would work if a cleverly designed and built machine were used.